Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
July 1, 2008
Patent Application Number
11513544
Date Filed
August 31, 2006
Patent Primary Examiner
Patent abstract
A first charge pump circuit converts an input voltage (Vin) into a predetermined voltage, to be outputted as a first output voltage (Vout1). A second charge pump circuit converts the first output voltage (Vout1), outputted from the first charge pump circuit, into a predetermined voltage, to be outputted as a second output voltage (Vout2). A control circuit controls charge-discharge states of the first charge pump circuit and the second charge pump circuit. The control circuit synchronously controls a state in which a first output capacitor of the first charge pump circuit is charged, and a state in which a second flying capacitor of the second charge pump circuit is charged.
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